Salwar kameez is a traditional dress worn by women in the northern region of India. It is a popular attire in Punjab, Haryana, and Delhi. However, the correct answer to this question is option 'C' - Punjab.

Explanation:

• Salwar kameez is a traditional dress that originated in the Punjab region, which is now split between India and Pakistan.

• Punjab is a state in northern India that shares its border with Pakistan. It is known for its rich culture, food, and traditional attire.

• Salwar kameez is the most common dress worn by women in Punjab. It is a comfortable and versatile outfit that can be worn for both casual and formal occasions.

• The dress consists of a long tunic called the kameez, which is paired with loose-fitting pants called the salwar.

• The kameez can be of various lengths and styles, ranging from simple and plain to heavily embroidered and embellished.

• The salwar is also available in different styles, such as the churidar, which is a tight-fitting pant that gathers at the ankle, and the palazzo, which is a wide-leg pant that flares out from the waist.

• The dress is usually paired with a dupatta, which is a long scarf that is draped over the head and shoulders.

• Salwar kameez is a popular dress not only in Punjab but also in other parts of India and Pakistan.

In conclusion, Salwar kameez is a traditional dress worn by women in northern India, and it is most commonly worn in Punjab.